Wireless Headphones - with microphone, True Wireless headset, ear, closed construction, 3,5mm Jack, Bluetooth 4.1, for PC, supports A2DP, AVRCP, HFP and HSP, game mode, track shuffle, taking calls, with volume control, frequency range: 20 Hz-20000 Hz, sensitivity: 108 dB/mW, impedance: 32 Ohm, converter: 40mm, battery life of up to 10 hr(s)